Series condenser for refrigerant cooling



Feb. 4, 1930. J. KARMAZIN 1,745,544

SERIES CONDENSER FOR REFRIGERANT COOLING Filed April 14. 1927 gwwemboz Jam KIQMJZl/V Patented Feb; 4, 1930 1,745,544

, dUNITED STATES PATENT/OFFICE JOHN KARMAZIN, OF DETROIT, MICHIGAN SERIES CONDENSER FOR REFRIGERANT COOLING Application filed April 14, 1927. Serial No. 183,663.

This invention relates to heat exchange decertain walls broken away to show the details vices, and particularly to the type of heat exof its construction. change unit intended for the cooling of a fluid Fig. 3 is a fragmentary top plan view of the which has become heated by compression or condenser shown in Fig. 1.

. by contact with bodies at higher temperatures, Fig. 4 is a fragmentary inverted plan view, such asparts of an internal combustion en-' showing the bottom of the condenser shown gine, refrigerating plant or the like. in Fig. 1.

. One object of the invention is to provide a Fig. 5 is a fragmentary front elevation, heat exchan e unitcomprising an elongated partly in section, of the radiator of an inbut compactfly arranged fluid conducting pasternal combustion engine having one form of sage through the cooling unit. the present invention applied thereto.

A further object of the invention is to pro- Fig. 6 is a fragmentary plan view with vide a pressure cooling unit or condenser of p rts roken awaythe fin and tube type in which the fluid under fl- 7 S detail of y e Used nx '15 pressure or compression to be cooled is connecting successive tubes in series. j ducted through a plurality of tubes arranged The construction shown in Figs. 1 to 3 is 7 in series. especially adapted, though by no means A further object of the invention is to prolimited. to use as a condenser for household vide a radiator cooling unit in which fluid refrigeration systems. Numeral 10 indicates conducting tubes built up by superposing a cooling flanges or fins which have extending plurality of fin elements having tube sections f m n i and p f y integral t integral therewith are so connected that the With a plurality of tapering tubular projecfiuid to be cooled, or a part thereof, traverses tions 11. The proiections 11 are adapted to a pl r lit f th t b i sequence, b for b be nested within the projections on the next 25 ing returned to th system with whi h th lower fin element 10 to form continuous tubes cooling unit is connected. I I 12 extending vertically throughout the stack A further object of the invention i to p of superposed elements. This construction is vide acooling u it o ti in which the described more in detail in my prior copendfluid to be cooled is conducted through a path ing application Serial No. 641,850, filed May of greater length than the length-of the, cool- 1993- ing unit. but within the cooling unit; In one p y Present invention 0011- p A further objectof the invention is to pro templates adaptation 9 h fluid Cooling vide a cooling unit with separate cooling F descl'lbed in y @Rp f passages for the reception of two or more filfied to Systems reqlllnng 3 rednctlon 3 different fluids, usually associated with the 111 thqtemperature of a mp y Small same system or machine, such. for example, as l f y 0f T thls 9nd means are the cooling water and the lubricatingoil of plol'lded for Connectlng thefubos Such a an internal combustion (angina manner as to form one continuous, tortuous With these and other objects in view, my conduit of great length through the invention consists in the novel devices, comdenser Thls means may take the form of binations and arrangements of parts illustubular yokes 13 and adapted to connect the ends of adiacent tubes at the to and hott z t. t a I p gg g rf g g lt g and to be heremafte? tom of the cooling unit. For example. when I r y the cooling unitcomprises two rows of tubes 45 if the i m 12, the yokes 13 at the top may extend diag- V 1s fragmentary front elevatlonv I onally, connecting each of the front row tubes P F y secfilolh of a radlafol P d with the back row tube of the next adjacent y g the Present mventlQnpair, (Fig. 3) while the vokes 14 at the bot- F g- 2 1s 51 f gm y end eleVfltIOIl 0f the tom may extend transversely, connecting the 60 unit shown in F 1g. 1, enlarged and having front and back tubes of each pair (Fig. 4). 1.00

The telescoping joints between the tube sections may if desired be secured by solder which may be applied in powdered form, with a flux, before the tubes are superposed, and subsequently heated to fusion, or the assembled cooling unit may be solder dipped. A cooling unit constructed in this manner is especially adapted for use as a condenser for household refrigeration machines, the intake and outlet pipes 15 and 16, being connected into the cooling fluid containing system.

In Figs. 5 and 6, I have illustrated an application of the invention to the cooling of the lar projections in parallel spaced relation extending transversely from one side thereof,

the tubular projections on one element being nested within the juxtaposed element to form a plurality of continuous tubes, and one piece yokes connecting the ends of said tubes to form a continuous conduit, and means for connecting the ends of said conduit into the fluid containing system. I

2. A heat exchange unit of the integral fin and tube type comprisinga plurality of fluidpassages formed of nested tubular 'PIOjGCq tions having 'fin members integral therewith,

the center of said passages being unobstructed except for relatively narrow integral heat conducting bars across the center of the Water columns at the ends of said projections and means at the end of said fluid passage for con meeting the end of one passage to the end of an adjacent passage to cause the fluid to flow in a continuous passage therethrough,

In testimony whereof I have aflixed'my sig' lubricating oil of an internal combustion ennature, hi pe ificati n.

gine. In the device illustrated the oil cooling radiator is built into the water cooling radiator. The water cooling radiator comprises fins 10 and tubes-17, formed integral with the fins 10 and nested together as illustrated in more detail in Fig. 2, which tubes open into an upper header 18 and a lower header 19 of a conventional automobile radiator, connected in the usual way with the engine cooling system. A suitable number of the tubes 17 are connected at their upper and JOHN KARMAVZVIN.

lower ends by means of yokes 20 similar to the yokes already described, to form a single continuous conduit, said yokes 20 lying within the headers 18 and 19. The ends of the conduit are connected through pipes or tubes 21 and 22 with the engine lubricating system.

The radiator cooling section may be built up I of superposed fin and tube section elements, in the manner described in my prior application above identified. An effective oil cooling device in an appropriate and convenient location is thus msured.

The refrigerating condenser illustrated in Figs. 1 to 4 is adapted to receive the refrigcrating fluid under highpressure from the compressor and because of the integral connection of the cooling fins 10 with the tube walls 11 to rapidly extract the heat from the compressed fluid providing acondenser unit of utmost strength and efliciency with a minimum size. I

While I have illustrated and described in some detail certain typical embodiments of my invention these embodiments are to be considered as illustrative, and not restrictive, the invention being limited only by a broad in terpretation of the appended claims.

IVhatI claim as my invention is: p 1. A condenser for refrigeration machines comprising a plurality of superposed sheet metal fin elements each having integral tubu- 

